CN103600390B - A kind of method of bamboo lumber surface flame-retardant and strengthening - Google Patents
A kind of method of bamboo lumber surface flame-retardant and strengthening Download PDFInfo
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- CN103600390B CN103600390B CN201310619058.XA CN201310619058A CN103600390B CN 103600390 B CN103600390 B CN 103600390B CN 201310619058 A CN201310619058 A CN 201310619058A CN 103600390 B CN103600390 B CN 103600390B
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Abstract
A method for bamboo lumber surface flame-retardant and strengthening, belongs to bamboo processing technical field.It comprises following processing step: body paper dipping modified resin, obtains impregnated paper; The surface coating modified resin of Bao Zhu or dipping modified resin, obtain the thin bamboo of modification; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed; Impregnated paper and the thin bamboo of modification carry out drying; Impregnated paper and/or the thin bamboo of modification, as top layer and bamboo base material hot pressing compound, obtain the bamboo lumber of surface flame-retardant and strengthening.The thin bamboo of the body paper that the present invention is flooded by modified resin and modified resin process, as the surface of bamboo base material, enhances bamboo lumber surface, but also has anti-flaming function.Meanwhile, the present invention only just need can complete whole process by modified resin process, drying and hot pressing, and processing technology is simple, and reduce production cost, the product obtained is attractive in appearance, durable, and top layer can not depart from.
Description
Technical field
The invention belongs to bamboo processing technical field, be specifically related to a kind of method of bamboo lumber surface flame-retardant and strengthening.
Background technology
The problems such as the product such as bamboo flooring, bamboo furniture texture is fresh and clean, and rapidly, but plate surface exists wearability not and the problem such as anti-flammability is inadequate in development, and wearability not often there will be surface abrasion, stain, anti-flammability is the hidden danger causing fire not.The fire-retardant general employing fire retardant impregnation process of existing bamboo and wood materials and the process of surface flame-retardant coating.For the material that fire retardant impregnation process is organized without horizontal ray for this compact structure of bamboo wood, the large cost of dipping difficulty is high, also there is leachability and to gummed, the harmful effect of covering with paint, lacquer, colour wash, etc.; The process of surface flame-retardant coating, processing cost is higher, and resistance to water is not ideal, ornamental not good usually.
Summary of the invention
For prior art Problems existing, the object of the invention is to design the technical scheme of a kind of method that bamboo lumber surface flame-retardant and strengthening are provided.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, is characterized in that comprising following processing step:
1) body paper dipping modified resin, obtains impregnated paper; The surface coating modified resin of Bao Zhu or dipping modified resin, obtain the thin bamboo of modification; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed;
2) impregnated paper and the thin bamboo of modification carry out drying;
3) impregnated paper and/or the thin bamboo of modification are as top layer and bamboo base material hot pressing compound, obtain the bamboo lumber of surface flame-retardant and strengthening.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, it is characterized in that in described step 1), body paper is single-part stationery or duplex paper, single-part stationery is quantitatively 20 ~ 70g/m
2, two-sided dipping, pickup is 1 ~ 5 times of original paper quality; Duplex paper mesexine paper is quantitatively 5 ~ 10g/m
2, single-side impregnated, pickup is 0.5 ~ 3 times of original paper quality, and in duplex paper, sublevel paper is quantitatively 20 ~ 65g/m
2, two-sided dipping, pickup is 2 ~ 5 times of original paper quality.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, it is characterized in that in described step 1), thin bamboo is sliced bamboo or the thin bamboo of rotary-cut, thickness is the pickup of 0.2 ~ 2mm, Bao Zhu is 10% ~ 20% of thin bamboo weight, and coated weight is 120 ~ 350g/m
2.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, it is characterized in that in described step 1), low-molecular-weight melmac viscosity is 15 ~ 25s, described curing agent is triethanolamine, the footpath grain of described alundum (Al2O3) is less than 30 microns, and described suspending agent is CMC or sodium alginate.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, is characterized in that the weight ratio of low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent in described step 1) is 100:0.2 ~ 0.6:35 ~ 50:0 ~ 2.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, it is characterized in that described step 2) middle employing stage drying: interlude 120 ~ 145 DEG C, inducer and outlet section 70 ~ 80 DEG C, drying time 7 ~ 15min, after dry, procuring degree is 30 ~ 65%.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, it is characterized in that in described step 3), hot pressing temperature is 170 ~ 190 DEG C, hot pressing pressure is 2 ~ 3.5MPa, and hot pressing time is 20 ~ 30s.
Described a kind of bamboo lumber surface flame-retardant and the method for strengthening, is characterized in that the weight ratio of described low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent is 100:0.3 ~ 0.5:40 ~ 45:0.5 ~ 1.5.
Above-mentioned a kind of bamboo lumber surface flame-retardant and the method for strengthening, reasonable in design, the thin bamboo of the body paper flooded by modified resin and modified resin process, as the surface of bamboo base material, is enhanced bamboo lumber surface, but also has anti-flaming function.Meanwhile, the present invention only just need can complete whole process by modified resin process, drying and hot pressing, and processing technology is simple, and reduce production cost, the product obtained is attractive in appearance, durable, and top layer can not depart from.
Detailed description of the invention
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
1) get is quantitatively 50g/m
2body paper, two-sided dipping modified resin, pickup is 3 times of original paper quality, obtains impregnated paper; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed, wherein low-molecular-weight melmac viscosity is 15 ~ 25s, curing agent is triethanolamine, the footpath grain of alundum (Al2O3) is less than 30 microns, suspending agent is CMC or sodium alginate, and the weight ratio of low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent is 100:0.4:45:1.5;
2) impregnated paper adopts stage drying: interlude temperature 135 DEG C, inducer and outlet block temperature 75 DEG C, drying time 10min, after dry, procuring degree is 45%;
3) dried impregnated paper hot pressing is compounded in bamboo substrate surface, hot pressing temperature is 180 DEG C, and hot pressing pressure is 3MPa, and hot pressing time is 25s, obtains the bamboo lumber of surface flame-retardant and strengthening.
In this embodiment 1, body paper also can be got is quantitatively 20g/m
2, 45g/m
2, or 70g/m
2body paper, pickup also can adopt 1,4 or 5 times of original paper quality.
Embodiment 2:
1) get is quantitatively 8g/m
2body paper as overlay paper, single-side impregnated, pickup is 2.5 times of original paper quality, and getting is quantitatively 45g/m
2body paper as sublevel paper, two-sided dipping, pickup is 2.5 times of original paper quality, and overlay paper and sublevel paper compound, obtain impregnated paper; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed, wherein low-molecular-weight melmac viscosity is 15 ~ 25s, curing agent is triethanolamine, the footpath grain of alundum (Al2O3) is less than 30 microns, suspending agent is CMC or sodium alginate, and the weight ratio of low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent is 100:0.6:35:2;
2) impregnated paper adopts stage drying: interlude temperature 120 DEG C, inducer and outlet block temperature 70 DEG C, drying time 15min, after dry, procuring degree is 30%;
3) dried impregnated paper hot pressing is compounded in bamboo substrate surface, hot pressing temperature is 170 DEG C, and hot pressing pressure is 2MPa, and hot pressing time is 30s, obtains the bamboo lumber of surface flame-retardant and strengthening.
In this embodiment 1, body paper also can adopt that to get be quantitatively 5g/m
2body paper as overlay paper, single-side impregnated, pickup is 3 times of original paper quality, and getting is quantitatively 20g/m
2body paper as sublevel paper, two-sided dipping, pickup is 5 times of original paper quality, and overlay paper and sublevel paper compound, obtain impregnated paper, or to get be quantitatively 10g/m
2body paper as overlay paper, single-side impregnated, pickup is 0.5 times of original paper quality, and getting is quantitatively 65g/m
2body paper as sublevel paper, two-sided dipping, pickup is 2 times of original paper quality, and overlay paper and sublevel paper compound, obtain impregnated paper.
Embodiment 3
1) get sliced bamboo or the thin bamboo dipping modified resin of rotary-cut or coating modified resin that thickness is 0.2 ~ 2mm, wherein pickup is 15% of thin bamboo weight, and coated weight is 200g/m
2, obtain the thin bamboo of modification; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed, wherein low-molecular-weight melmac viscosity is 15 ~ 25s, curing agent is triethanolamine, the footpath grain of alundum (Al2O3) is less than 30 microns, and the weight ratio of low-molecular-weight melmac, curing agent and alundum (Al2O3) is 100:0.35:50;
2) the thin bamboo of modification adopts stage drying: interlude temperature 145 DEG C, inducer and outlet block temperature 80 DEG C, drying time 7min, after dry, procuring degree is 65%;
3) thin for dried modification bamboo hot pressing is compounded in bamboo substrate surface, hot pressing temperature is 190 DEG C, and hot pressing pressure is 3.5MPa, and hot pressing time is 20s, obtains the bamboo lumber of surface flame-retardant and strengthening.
In this embodiment 3, the pickup of thin bamboo can adopt 10%, 18% or 20% of thin bamboo weight, and coated weight adopts 120g/m
2, 280g/m
2, 350g/m
2.
Embodiment 4
1) get is quantitatively 45g/m
2body paper, two-sided dipping modified resin, pickup is 4.5 times of original paper quality, obtains impregnated paper, gets sliced bamboo that thickness is 1.5mm or rotary-cut thin bamboo dipping modified resin, obtains the thin bamboo of modification; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed, wherein low-molecular-weight melmac viscosity is 15 ~ 25s, curing agent is triethanolamine, the footpath grain of alundum (Al2O3) is less than 30 microns, suspending agent is CMC or sodium alginate, and the weight ratio of low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent is 100:0.4:40:1;
2) impregnated paper and the thin bamboo of modification adopt stage drying: interlude temperature 125 DEG C, inducer and outlet block temperature 75 DEG C, drying time 8min, after dry, procuring degree is 55%;
3) dried impregnated paper and the thin bamboo hot pressing of modification are compounded in bamboo substrate surface, respectively as the upper layer of bamboo base material, hot pressing temperature is 175 DEG C, and hot pressing pressure is 2.5MPa, and hot pressing time is 20s, obtains the bamboo lumber of surface flame-retardant and strengthening.
Carry out oxygen index (OI) test to the bamboo lumber that embodiment 1-4 obtains, its oxygen index (OI) all can reach more than 40%, and undressed bamboo lumber oxygen index (OI) is about 20%, and heavy bamboo floor oxygen index (OI) is about 28%.As can be seen here, the bamboo lumber that the present invention obtains has obvious flame retardant effect.
Claims (3)
1. a method for bamboo lumber surface flame-retardant and strengthening, is characterized in that comprising following processing step:
1) body paper dipping modified resin, obtain impregnated paper, described body paper is single-part stationery or duplex paper, and single-part stationery is quantitatively 20 ~ 70g/m
2, two-sided dipping, pickup is 1 ~ 5 times of original paper quality, and duplex paper mesexine paper is quantitatively 5 ~ 10g/m
2, single-side impregnated, pickup is 0.5 ~ 3 times of original paper quality, and in duplex paper, sublevel paper is quantitatively 20 ~ 65g/m
2, two-sided dipping, pickup is 2 ~ 5 times of original paper quality; And/or the surface coating modified resin of thin bamboo or dipping modified resin, obtain the thin bamboo of modification; Described modified resin is modulated by low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent and is formed, described low-molecular-weight melmac viscosity is 15 ~ 25s, described curing agent is triethanolamine, the footpath grain of described alundum (Al2O3) is less than 30 microns, described suspending agent is CMC or sodium alginate, and the weight ratio of described low-molecular-weight melmac, curing agent, alundum (Al2O3) and suspending agent is 100:0.3 ~ 0.5:40 ~ 45:0.5 ~ 1.5;
2) impregnated paper and/or the thin bamboo of modification carry out drying, adopt stage drying: interlude 120 ~ 145 DEG C, inducer and outlet section 70 ~ 80 DEG C, drying time 7 ~ 15min, after dry, procuring degree is 30 ~ 65%;
3) impregnated paper and/or the thin bamboo of modification are as top layer and bamboo base material hot pressing compound, obtain the bamboo lumber of surface flame-retardant and strengthening.
2. the method for a kind of bamboo lumber surface flame-retardant as claimed in claim 1 and strengthening, it is characterized in that in described step 1), thin bamboo is sliced bamboo or the thin bamboo of rotary-cut, thickness is the pickup of 0.2 ~ 2mm, Bao Zhu is 10% ~ 20% of thin bamboo weight, and coated weight is 120 ~ 350g/m
2.
3. the method for a kind of bamboo lumber surface flame-retardant as claimed in claim 1 and strengthening, it is characterized in that in described step 3), hot pressing temperature is 170 ~ 190 DEG C, hot pressing pressure is 2 ~ 3.5MPa, and hot pressing time is 20 ~ 30s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619058.XA CN103600390B (en) | 2013-11-28 | 2013-11-28 | A kind of method of bamboo lumber surface flame-retardant and strengthening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310619058.XA CN103600390B (en) | 2013-11-28 | 2013-11-28 | A kind of method of bamboo lumber surface flame-retardant and strengthening |
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| CN103600390A CN103600390A (en) | 2014-02-26 |
| CN103600390B true CN103600390B (en) | 2016-02-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105666617B (en) * | 2016-04-08 | 2017-12-05 | 中国林业科学研究院木材工业研究所 | A kind of flame-retarding adhesive and fire proofing and its preparation method and application |
| CN114369373B (en) * | 2022-01-21 | 2023-04-07 | 益阳桃花江竹业发展有限公司 | Wear-resistant high-strength bamboo-plastic composite material for container bottom plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379296Y (en) * | 1999-06-02 | 2000-05-24 | 邓绍明 | Composite bamboo floor |
| CN1383978A (en) * | 2001-04-30 | 2002-12-11 | 林勇 | Wear resistant composite decorative wood sheet |
| CN102501276A (en) * | 2011-11-03 | 2012-06-20 | 福建农林大学 | Impregnated paper composite thin bamboo and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100015389A1 (en) * | 2008-07-17 | 2010-01-21 | Alberta Research Council Inc. | Container flooring material and method of manufacture |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379296Y (en) * | 1999-06-02 | 2000-05-24 | 邓绍明 | Composite bamboo floor |
| CN1383978A (en) * | 2001-04-30 | 2002-12-11 | 林勇 | Wear resistant composite decorative wood sheet |
| CN102501276A (en) * | 2011-11-03 | 2012-06-20 | 福建农林大学 | Impregnated paper composite thin bamboo and production method thereof |
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